<template>
  <!-- 当没有商品名称时 就不进行显示 防止价格闪烁问题 -->
	<view v-if="goods_info.goods_name" class="goods-detail-container">
    <!-- 轮播图区域 -->
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
		  <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
		    <image :src="item.pics_big" @click="preview(i)"></image>
		  </swiper-item>
		</swiper>
    
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 商品信息主题区域 -->
      <view class="goods-info-boby">
        <!-- 商品名称 -->
        <view class="goods-name">
          {{goods_info.goods_name}}
        </view>
        <!-- 收藏 -->
        <view class="favi">
            <uni-icons type="star" size="18" color="gray"></uni-icons>
            <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费</view>
    </view>
    <!-- 将图文数据渲染到页面中 -->
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <!-- 商品导航组件区域 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
	</view>
</template>

<script>
  import {mapState,mapMutations,mapGetters} from 'vuex'
	export default {
    computed:{
      ...mapState('m_cart',[]),
      ...mapGetters('m_cart',['total'])
    },
    watch:{
      // 监听购物车数量total的变化
      total:{
        handler(newVal){
            // 遍历购物车的数据 并进行赋值
            const findResult = this.options.find(x=>x.text==='购物车')
            if(findResult){
              findResult.info=newVal
            }
        },
        // 开启立即监听
        immediate:true
      }
    },
    data () {
          return {
            goods_info:{},
            options: [{
                icon: 'shop',
                text: '店铺',
                infoBackgroundColor:'#007aff',
                infoColor:"red"
            }, {
                icon: 'cart',
                text: '购物车',
                info: 0
            }],
            buttonGroup: [{
              text: '加入购物车',
              backgroundColor: '#ff0000',
              color: '#fff'
            },
            {
              text: '立即购买',
              backgroundColor: '#ffa200',
              color: '#fff'
            }
            ]
          }
        },
		
    onLoad(options){
      // 获取传递过来的id
       const goods_id = options.goods_id
       this.getGoodsDetail(goods_id)
    },
    methods:{
      ...mapMutations('m_cart',['addToCart']),
      async getGoodsDetail(goods_id){
        const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
        if(res.meta.status!==200) return uni.$showMsg()
        // 给img标签添加display:block解决图片之间有缝隙的问题 更改图片后缀格式解决苹果手机无法正常显示问题
        res.message.goods_introduce=res.message.goods_introduce.replace(/<img /g,'<img style="display:block;"').replace(/webp/g,'jpg')
        this.goods_info=res.message
      },
      preview(i){
        // 点击图片后进行大图浏览
        uni.previewImage({
          current:i,
          // 使用map函数遍历出所有的图片 并形成一个新数组
          urls:this.goods_info.pics.map(x=>x.pics_big)
        })
      },
      // 点击店铺或购物车跳转页面
      onClick(e){
        if(e.content.text==='购物车'){
          uni.switchTab({
            url:'/pages/cart/cart'
          })
        }
      },
      // 判断点击的是购物车还是立即购买
      buttonClick(e){
        if(e.content.text === '加入购物车'){
          // 阻止商品对象
          const goods = {
            goods_id:this.goods_info.goods_id,
            goods_name:this.goods_info.goods_name,
            goods_price:this.goods_info.goods_price,
            goods_count:1,
            goods_small_logo:this.goods_info.goods_small_logo,
            goods_state:true
          }
          // 调用addToCart方法
          this.addToCart(goods)
        }
      }
    },
    
	}
</script>

<style lang="scss">
  swiper{
    height: 750rpx;
    image{
      width: 100%;
      height: 100%;
    }
  }
  .goods-info-box{
    padding: 10px;
    padding-right: 0;
    .price{
      color:#C00000;
      font-size: 18px;
      margin: 10px 0;
    }
    .goods-info-boby{
      display: flex;
      justify-content: space-between;
      .goods-name{
        font-size: 13px;
        margin-right: 10px;
      }
      .favi{
        width: 120px;
        font-size: 12px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        border-left: 1px solid #efefef;
        color: gray;
      }
    }
    .yf{
      font-size: 12px;
      color: gray;
      margin: 10px 0;
    }
  }
  .goods_nav{
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
  }
  .goods-detail-container{
    padding-bottom: 50px;
  }
</style>
